Home / 78,664.98-108,557.24-42,854.90

Finding the Fourth Proportional to 78,664.98, 108,557.24 and 42,854.90

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Solution

The fourth proportional to 78,664.98, 108,557.24 and 42,854.90 is: 59,139.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,664.98 : 108,557.24 = 42,854.90 : x
  2. Step 2: Convert to fraction form
    78,664.98/108,557.24 = 42,854.90/x
  3. Step 3: Cross multiply
    78,664.98x = 108,557.24 × 42,854.90
  4. Step 4: Simplify right side
    78,664.98x = 4,652,209,664.48
  5. Step 5: Solve for x
    x = 4,652,209,664.48/78,664.98
  6. Step 6: Final answer
    x = 59,139.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.